Device for the working of metal bands, especially lines, for typographic purposes



June 932. J. WAGNER ET AL 7 DEVICE FOR THE WORKING OF METAL BANDS, ESPECIALLY LINES, FOR TYPOGRAPHIC PURPOSES Filed Aug. 27, 1930 2 Sheets-Sheet 1 Hi a June 7, 1932. j WAGNER ET AL 1,861,670

DEVICE FOR THE WORKING OF METAL BANDS, ESPECIALLY LINES, FOR TYPOGRAPHIC PURPOSES Filed Aug. 27, 1930 2 Sheets-Sheet 2 47 Im cwZ o/w:

After-hey part, the band being Patented June 7, 1932 ETEE STATES ATENT i i if.

WALTER KROSTEWITZ, OF

BERLIN-HOHENSGHONHAUSEN, GERM'ANY DEVICE FOR THE WORKING OF METAL BANDS, ESPECIALLY LINES, FOR TYPOGRAPHIO PURPOSES Application filed August 27, 1930, Serial No. 478,268, andin Germany September 3, 1929.

This invention relates to a device for the working of metal bands, especially such as are used for the manufacture of lines, space lines, and the like for typographic purposes. It has already been proposed to clamp strips of metals in a clamping device in which they are to be worked,and to move them, for this purpose, along knives which act simultaneously upon the two narrow edges of the strip.

Such devices allow, however, only of the manufacture of strips of comparatively short length, as otherwise the length of the machine would be excessively great. With the known devices the metal band is conducted in flat position over a guide member furnished at both sides with knives projected into the guiding path and working the head and the foot.

Now, the present invention renders it possible to work a very long brass band which is wound upon a roll, and to manufacture so-called endless strips, by holding the band to be worked in contact with a guide member consisting of two lateral parts and a base pressed against these parts by means of elastic members acting from above, and being drawn through said guide solely by a pull acting at its front end. As with such devices the machine cannot be 3 cleaned when a long strip is just being where the strip enters into worked, and, besides, small irregularities of the brass can easily give rise to disturbances, there are provided, according to this inven tion, scraping members located at that end the device, said scraping members cleaning the metal strip on both sides prior to its entering into the machine. Furthermore, measuring devices are provided which permit to ascertain the breadth and the thickness of the worked strips. These measuring devices are claimed, in this invention, only in connection with the machine, but just in this connection they are of particular importance, as when a very long strip is to be manufactured the material must be continually watched in order to prevent the arising of comparatively large amounts of useless strips, also in order to do away with the continual manual after-Incasurement.

The invention is illustrated diagrammatically and by way of example on the accompanying drawings on which Figure 1 is a sideview of the most essential parts of the machine; Figure 2 is a plan of these parts; Figure 3 is asection in the plane -AB of Fig.2; Figure 4 is a side-view of a winding-on device for the worked metal band, this device being normally located righthand from the righthand end of Figs. 1 and 2; Figure 5 is a plan of the parts shown in Fig. 4; Figure 6 is a top view of the scraper shown on the left hand side of Fig. 1 on an enlarged scale; Figure 7 is a plane of Fig. 6; Figure 8 is a section through Fig. 7 in the direction of the line 8-8; and Figure 9 is a side view, partly in section, of the working tool shown in Fig. 3 on an enlarged scale and partly in section.

On the drawings, 1 denotes the base plate or bed of the machine which may be supported on any suitably designed substructure or (and) may be provided with feet. Over the entire length of the upper surface of the bed extends a supporting ledge or guide 3 which is bounded at both sides by two guide ledges 2. On said ledge 3 and between the ledges 2 moves the strip to be worked, or being already worked. The tools for this purpose from the ledge 3; they are arranged laterally are located in slides 5 which are movable to the direction of in guides 4 transversely the ledge 3. The guides 4': which are firmly afliXed to the bed of the machine consist preferably of lateral ledges between which the slide 5 is running and to the tops of which covering plates are secured which partly overlap the slide 5-so that this latter is guided laterally, as well as in the direction from above to below.

On their outer sides the guides are connected with one another by covering plates 6 serving as bearings for adjusting screws 7 which are turnable in said plates, but cannot be moved longitudinally in them. The threads of these screws engage correspondingly threaded bores in the slides 5 so that by turning the screws 7 the slides can be shifted to and fro in their guides. At its inwardly directed free side every slide is provided with a knife 8, the shape of which may be as desired; it may be shaped like an ordinary tool, as used in connection with machine tools, or it may be circular as also known in connection with the machine tools, that is to say, a tool of this type may be formed by a circular plate having a recess constituting a cutting edge. Knives of this type are shown in Figs. 2 and 3. They are held in proper position upon the slides 5 by screws 8 which also prevents them from turning. They can be removed from the slides in order to be after-ground, and then again affixed thereto.

If the knives are intended for the working of the foot of the metal strips or for the working of space lines and the like, they are provided with a plane cutting edge, but if they are intended for the working of line pictures then they are profiled according to the configuration of these pictures. The purpose of the adjustability of the knives is to maintain the accurate height of the lines.

The lateral ledges 2 are recessed in front of the knives so that these ledges can engage the metal strips guided upon the ledge 3.

The lateral ledge 2 is reinforced by a ledge 9 on that side which lies opposite the knives, so that the ledge 2 cannot give way to the pressure exerted by the knives during the cutting operation. The metal band 20 to be worked is supplied from the left (with respect to Figs. 1 and 2) and runs over the guide 3 and leaves, finally, the machine on the righthand' end thereof. For holding fast the metal band on the ledge 3 rolls 10 are provided, which are singly arranged directly in front of the individual knives 8. The rolls 10, for the purpose of more fully showing and describing the elastic scrapers, are attached to arms 11 attached in turn to the lateral reinforcing ledge 9 by means of bolts 12. The ledge 9 is provided with upwardly directed cheeks or lugs 13, and on each bolt 12 is supported an arm 14: located outside the respective cheek or lug 13 and being subjected to the action of a spring 15, one end of which is affixed to the respective arm. The other end is affixed to the frame of the machine or to the ledge 9, for instance by means of a pin so that, as the bolt 12 is turn able in the cheek 13, whereas the arms 11 and 14: are firmly attached thereto, the spring 15 tends to press the rolls downwards onto the metal strip that lies upon the guide 3. There may also be provided guide ledges 16, the ends of which are afiixed to the ledge 9 and lie closely upon the band that is moved along between the ledges 3. Said ledges 16 serve not only as guide members, but also for freeing the metal band that passes along below them from dirt perhaps adhering to it, as well as from cut-0E chips. These lat ter are conducted away laterally by reason of the oblique position of the ledges 16.

An elastic scraper or a plurality of such scrapers 17 is provided also at the entrance end of the device, and its or their object is also to remove dirt, etc., from the metal band. This latter is drawn off from a store roll located at one end of the machine and is wound upon another roll 26 located at the other end of the same.

The elastic scraper is shown in detail on an enlarged scale in Figs. 68. These figures show cushions 32 made of felt or any other similar material for the purpose of wiping the bands 20. The cushions are mounted on metallic members or shoes 33 and are secured in place with the aid of screws 34. The shoes 33 swing around the axles 35, which axles are mounted in bearing blocks 36. On each axle there is mounted on the outer end an arm 37 and each pair of opposite arms is provided 'with springs 38 between pins 39 mounted on the arm and pin f0 mounted on the bearing block 36. By means of the springs 38, the cushions 32 are pressed against band 20.

If the band shall be removed at the commencement of the work, the rolls 10 are turned upwardly; they remain in this position in spite of the action of the springs 10, because these latter act as a crank-arm, the dead point position of which has been surpassed when the rolls 10 have been turned upwardly, as described. The metal-band is drawn through mechanically between the knives. The winding-on drum 26 is, for that purpose, rotated mechanically, for instance by means of an electromotor driving the drum by the intermediary of a worm-gear 27 (Fig. 5).

In order to attain a clean cut a plurality of knives is arranged behind one another. For working that face of the rule or line on which it stands when inserted into the printing form, a small number of knives will do, for instance three or four, as in the constructional form shown in the example in the drawings, whereas for the upper face or head of the line or rule from which a line is printed, preferably a larger number of knives is employed. In this case every knife need take off only a comparatively small chip. Of course, the number of the knives depends also upon the kind of the line to be worked. 7

If the metal band shall be worked also at its lateral faces, for instance in this way that a groove adapted to serve as signature is cut. into one or the other of said faces, another slide 22 may be provided on a convenient place of the base-plate preferably in front of the last knife, and that slide may also be adjustable between guide ledges 21 by means of an adjusting screw in the direction to, and away from, to the metal strip. The inner end of this slide is crooked upwardly in such a manner that it extends over the ledge 2 and lies above the ledge 3. To

' lines or rules, a coloring paper arranged exchangeably that part of the slide which lies above the ledge 8 is attached a vertical sleeve 23 in which a tool 41 is guided; preferably a screw 2l designed in the manner of a trowel, is

used. But also any other suitable tool adaptto be worked.

In order to allow of watching the operation of the machine, two measuring instruments may be provided at the delivery end of the machine. These two instruments are secured to the bed of the machine. The measuring roll of the one of them (18) contacts with the upper face of the finished strip or band and serves for measuring the accurate thickness thereof, whereas rolls of the other measuring instrument (19) contact with the sides of the strip or band so that the height of the same. after it has been worked, can be measured.

Finally, when manufacturing profiled device 28 of any known construction may be employed which colors the ready profiled head of the line when the latter passes along it (Fig. 4). The colored band is then moved along a strip of on the periphery of a rotated cylinder 29, the circumferential speed of whichcorresponds with the speed of the moved band and which is shifted axially when rotating in known manner, for

instance, by providing the axis 29a on which the cylinder rotates with thread and screwing it into a corresponding nut. There will then be formed on the cylinder 29 a helical line and that strip of paper after having removed from the cylinder permits to ascertain whether or not the profile is everywhere unobj'ectionable or whether, and where, there are in it objectionable portions that must be cut out of the finished band.

Pulling the metal band or strip through between the knives may be effected, of course, also in another way, for instance in that way which is customary with the known drawing procedure in which the front end of the respective material is grasped with tongs and pulled rectilinearly. It is also possible to conduct the metal band edgewise, in which case the working knives are arranged at a vertical wall and must be 5 adjustable in a vertical plane. Grasping the end of the band with tongs will preferably be done in that case in which thick lines are to be made, for which the material cannot be unwound from a roll, but which is in the 3 shape of bars, but also in such a case a winding-on drum like 26 can be used in that a rope or the like is employed, one end of which is attached to said bar and the other end of which is wound upon said drum. Connecting the rope and the said bar with one another may be effected in this way that the bar is provided with a bore in its end, the end of the rope is subdivided so as to resemble a fork with two spikes, and these rope ends are introduced from both sides into said boreand retained therein by transverse spikes. It is, in such a case, of course, necessary that the drum is sufliciently far remote from the metal band to allow of the winding on of such a length of rope as corresponds to the length of the band. If the requisitezspace is not available, the length of way must be increased by oneor more guide rolls over which the ropeis led.-

Behind the last m1 8 on the table 1 of the machine a device similar to the device 17 may be provided. This is the device 30, the ob-v ject of which is to remove the bur arising while the metal band is being worked.

We claim:

1. device of the character and for the purpose described,.comprising, in combination with two lateral members and base guide ledges forming together a guide path for a metal band, and with knives extending into said path at both sides thereof, yielding means so arranged as to be adapted to hold said band in the said path, means for exerting a pulling action on said band, and transmitting members inserted between the last- 1iguentioned means and the front end of the said and.

2. A device of the character and for the purpose described, comprising, in combinati on with two lateral members and base guide ledges forming together a guide path for a metal band, and with knives extending into said path at both sides thereof, yielding means so arranged as to be adapted to hold said band in the said path, means for exerting a pulling action on said band, transmitting members inserted between the last-mentioned means and the front end of the band, and members provided at the entrance end for the said band and adapted to clean it before it enters into the device.

3. A device of the character and for the purpose described, comprising, in combination with two lateral members and base guide ledges forming together a guide path for a metal band, and with a plurality of knives extending into said path and adapted to work the head of said band, as well as with a plurality of knives also extending into the path and adapted to work the foot of the band, yielding means so arranged as to be adapted to hold said band in the said path, scraping members arranged between the consecutive knives and contacting with the upper face of the metal band and adapted to remove 'metal dirt, chips and the like from the same, means for exerting a pulling action on said band, and transmitting members inserted between the last mentioned means and the front end of the said band.

4:. A device of the character and for the purpose described, comprising, in combination with lateral members and base guide ledges forming together a guide path for a band, and with knives extending into said path at both sides thereof, yielding means so arranged to be adapted to hold said band in said path, means for exerting a pulling action, and transmitting members inserted between the last-mentioned means and the front end of the band.

5. A device of the character and for the purpose described, comprising, in combination with means for forming a guide path and with knives extending into said path at both sides thereof, yielding means so arranged to be adapted to hold said band in said path, means for exerting a pulling action, and transmitting members inserted between the last-mentioned means and the front end of the band;

In testimony whereof we affix our signatures.

JOHANNES WAGNER. WALTER KROSTEWITZ. 

